These symlinks are currently broken. Initially this diff fixed the symlinks, but then I realized I should just delete them since they apparently weren't needed. The Test Plan works with the files deleted, and I think it's because we're using @expo/vector-icons and expo-font to load these, and they don't need the files in this location.
The old react-native link, deprecated as of React Native 0.69, would put fonts in this folder. I think the folder still works for bundling assets with your app statically, but expo-font just doesn't need the files in that folder.